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<body>
    <textarea name="" id="txt" cols="30" rows="10"></textarea>
        <button id="btn">发布微博</button>
        <ul id="con">
            <li>
                儿童节快乐，达咩达咩
                <p>2021-06-01</p>
                <span>X</span>
            </li>
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                <p>2021-06-01</p>
                <span>X</span>`;
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